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A CAPTCHA ( / ˈkæp.tʃə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam. [1] The term was coined in 2003 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper, and John Langford. [2]
reCAPTCHA Inc. [1] is a CAPTCHA system owned by Google. It enables web hosts to distinguish between human and automated access to websites. The original version asked users to decipher hard-to-read text or match images. Version 2 also asked users to decipher text or match images if the analysis of cookies and canvas rendering suggested the page ...
HTML form. A webform, web form or HTML form on a web page allows a user to enter data that is sent to a server for processing. Forms can resemble paper or database forms because web users fill out the forms using checkboxes, radio buttons, or text fields.
HTML Application (HTA) An HTML Application ( HTA) is a Microsoft Windows program whose source code consists of HTML, Dynamic HTML, and one or more scripting languages supported by Internet Explorer, such as VBScript or JScript. The HTML is used to generate the user interface, and the scripting language is used for the program logic.
The most widely used anti-bot technique is the use of CAPTCHA. Examples of providers include Recaptcha, Minteye, Solve Media and NuCaptcha. However, captchas are not foolproof in preventing bots, as they can often be circumvented by computer character recognition, security holes, and outsourcing captcha solving to cheap laborers. [citation needed]
en.wikipedia.org
Akismet is a service that filters spam from comments, trackbacks, and contact form messages. The filter operates by combining information about spam captured on all participating sites and then using those spam rules to block future spam. Akismet is offered by Automattic, the company behind WordPress.com. Akismet was launched on October 25, 2005.
w3m. w3m running in an xterm displaying the Wikipedia main page. w3m is a free and open source text-based web browser licensed under the MIT license. It differs from other text based browsers by supporting elements such as tables, frames, and images. [6] [7]